DROP PROCEDURE

The DROP PROCEDURE statement permanently removes a stored procedure and its associated privileges from the database.

Syntax

DROP PROCEDURE [IF EXISTS] sp_name

Description

This statement is used to drop a stored procedure. That is, the specified routine is removed from the server along with all privileges specific to the procedure. You must have the ALTER ROUTINE privilege for the routine. If the automatic_sp_privileges server system variable is set, that privilege and EXECUTE are granted automatically to the routine creator - see Stored Routine Privileges.

The IF EXISTS clause is a MySQL/MariaDB extension. It prevents an error from occurring if the procedure or function does not exist. ANOTE is produced that can be viewed with SHOW WARNINGS.

While this statement takes effect immediately, threads which are executing a procedure can continue execution.

Examples

DROP PROCEDURE simpleproc;

IF EXISTS:

DROP PROCEDURE simpleproc;
ERROR 1305 (42000): PROCEDURE test.simpleproc does not exist

DROP PROCEDURE IF EXISTS simpleproc;
Query OK, 0 rows affected, 1 warning (0.00 sec)

SHOW WARNINGS;
+-------+------+------------------------------------------+
| Level | Code | Message                                  |
+-------+------+------------------------------------------+
| Note  | 1305 | PROCEDURE test.simpleproc does not exist |
+-------+------+------------------------------------------+

See Also

• DROP FUNCTION

• Stored Procedure Overview

• CREATE PROCEDURE

• ALTER PROCEDURE

• SHOW CREATE PROCEDURE

• SHOW PROCEDURE STATUS

• Information Schema ROUTINES Table

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